duty 指按道德和法律的标准，一个人永远要尽的义务，强调自觉性。
obligation 指道义上或法律上对他人的义务，强调强制性。也指因作出承诺而被迫履行的某种义务。
responsibility 指任何义务、职责、责任或职务上所尽的本分，强调对他人的责任。
function 指因职务或职业关系去履行某种职责。
参考例句
1. Function key not allowed in this mode. 在此模式下功能键不允许用。
2. Testing the system function and make samples. 测试系统功能、编写测试用例；
3. Use the spell check function at every stage of rewriting. 在每一阶段要改写时使用拼字检查功能。
英英解释
n.
1. a mathematical relation such that each element of one set is associated with at least one element of
2. what something is used for
3. the actions and activities assigned to or required or expected of a person or group
4. a relation such that one thing is dependent on another
5. a formal or official social gathering or ceremony
6. a vaguely specified social event
7. a set sequence of steps, part of larger computer program v.
1. perform as expected when applied
2. serve a purpose, role, or function
3. perform duties attached to a particular office or place or function
网络释义
function 函数;
功能;
用途;
职能;
objective function 目标函数;
对象的动作;
物镜函数;
目的関数;
Virtual Function 虚函数;
虚拟函式;
虚拟函数;
虛擬函式;
urban function 城市职能;
城市功能;
城市功能城市职能;
都市机能;
exponential function 指数函数;
指數函數;
指数函数,幂函数;
指数函数,幂函数=>指数関数;
